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<Title>Surface Chart (3)</Title>
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<p class="heading0">ChartDirector 7.0 (Java Edition)</p>
<p class="heading1">Surface Chart (3)</p>
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<img src="images/surface3.jpg" width='750' height='600'>
<br><br>
This example demonstrates using deep perspective. It also demonstrates surface grid lines of different line styles.<br><br>
<ul><li> The deep perspective in this example is configured using <a href="ThreeDChart.setPerspective.htm">ThreeDChart.setPerspective</a>.<br><br>
<li> Like all other lines in ChartDirector, "dash line colors" can be applied to surface grid lines to cause them to draw in dash line styles. In this example, <a href="BaseChart.dashLineColor.htm">BaseChart.dashLineColor</a> is used to create a dash line color, which is used as the minor surface grid line color in <a href="SurfaceChart.setSurfaceAxisGrid.htm">SurfaceChart.setSurfaceAxisGrid</a>.</ul>
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<p class="heading1a">Source Code Listing</p>
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<b>[JSP Version]</b> jspdemo/surface3.jsp
<div class='codeblock'><code class='pre'>&lt;%@page import="ChartDirector.*, java.util.*" %&gt;
&lt;%
// The x and y coordinates of the grid
double[] dataX = {-10, -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
double[] dataY = {-10, -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10};

// The values at the grid points. In this example, we will compute the values using the formula z =
// Sin(x * x / 128 - y * y / 256 + 3) * Cos(x / 4 + 1 - Exp(y / 8))
double[] dataZ = new double[dataX.length * dataY.length];
for(int yIndex = 0; yIndex &lt; dataY.length; ++yIndex) {
    double y = dataY[yIndex];
    for(int xIndex = 0; xIndex &lt; dataX.length; ++xIndex) {
        double x = dataX[xIndex];
        dataZ[yIndex * dataX.length + xIndex] = Math.sin(x * x / 128.0 - y * y / 256.0 + 3) *
            Math.cos(x / 4.0 + 1 - Math.exp(y / 8.0));
    }
}

// Create a SurfaceChart object of size 750 x 600 pixels
SurfaceChart c = new SurfaceChart(750, 600);

// Add a title to the chart using 20 points Times New Roman Italic font
c.addTitle("Surface Energy Density       ", "Times New Roman Italic", 20);

// Set the center of the plot region at (380, 260), and set width x depth x height to 360 x 360 x
// 270 pixels
c.setPlotRegion(380, 260, 360, 360, 270);

// Set the elevation and rotation angles to 30 and 210 degrees
c.setViewAngle(30, 210);

// Set the perspective level to 60
c.setPerspective(60);

// Set the data to use to plot the chart
c.setData(dataX, dataY, dataZ);

// Spline interpolate data to a 80 x 80 grid for a smooth surface
c.setInterpolation(80, 80);

// Use semi-transparent black (c0000000) for x and y major surface grid lines. Use dotted style for
// x and y minor surface grid lines.
int majorGridColor = 0xc0000000;
int minorGridColor = c.dashLineColor(majorGridColor, Chart.DotLine);
c.setSurfaceAxisGrid(majorGridColor, majorGridColor, minorGridColor, minorGridColor);

// Set contour lines to semi-transparent white (80ffffff)
c.setContourColor(0x80ffffff);

// Add a color axis (the legend) in which the left center is anchored at (665, 280). Set the length
// to 200 pixels and the labels on the right side.
c.setColorAxis(665, 280, Chart.Left, 200, Chart.Right);

// Set the x, y and z axis titles using 12 points Arial Bold font
c.xAxis().setTitle("X Title\nPlaceholder", "Arial Bold", 12);
c.yAxis().setTitle("Y Title\nPlaceholder", "Arial Bold", 12);
c.zAxis().setTitle("Z Title Placeholder", "Arial Bold", 12);

// Output the chart
WebChartViewer viewer = new WebChartViewer(request, "chart1");
viewer.setChart(c, Chart.SVG);

// Include tool tip for the chart
viewer.setImageMap(c.getHTMLImageMap("", "", "title='&lt;*cdml*&gt;X: {x|2}&lt;*br*&gt;Y: {y|2}&lt;*br*&gt;Z: {z|2}'")
    );
%&gt;
&lt;!DOCTYPE html&gt;
&lt;html&gt;
&lt;head&gt;
    &lt;title&gt;Surface Chart (3)&lt;/title&gt;
    &lt;!-- Include ChartDirector Javascript Library to support chart interactions --&gt;
    &lt;script type="text/javascript" src="cdjcv.js"&gt;&lt;/script&gt;
&lt;/head&gt;
&lt;body style="margin:5px 0px 0px 5px"&gt;
    &lt;div style="font:bold 18pt verdana;"&gt;
        Surface Chart (3)
    &lt;/div&gt;
    &lt;hr style="border:solid 1px #000080; background:#000080" /&gt;
    &lt;div style="font:10pt verdana; margin-bottom:1.5em"&gt;
        &lt;a href="viewsource.jsp?file=&lt;%=request.getServletPath()%&gt;"&gt;View Source Code&lt;/a&gt;
    &lt;/div&gt;
    &lt;!-- ****** Here is the chart image ****** --&gt;
    &lt;%= viewer.renderHTML(response) %&gt;
&lt;/body&gt;
&lt;/html&gt;</code></div>
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<br><hr class="separator"><div class="copyright">&copy; 2022 Advanced Software Engineering Limited. All rights reserved.</div>
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